JPH043631B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plug-in connector for reliable, strong, and durable electrical wire terminal connection.

Conventionally, this type of connector has been limited to two pressure-welding points, and if one of these points lacks the pressure-welding action of the wire end, there is a risk that the connection will be incomplete, resulting in poor electrical conduction, and the mechanism will be damaged. It also had many drawbacks, such as being complicated and difficult to process automatically, resulting in high costs.

Therefore, the present application is designed to eliminate the above-mentioned drawbacks, and the reliability of the electrical and mechanical connection mechanism is increased by independently press-bonding the upper, middle, and lower parts of one electric wire end. The present invention aims to provide an excellent plug-in connector that is easy to plug in, uses a small amount of material, can be automatically and continuously processed, is small, easy to use, and has mechanical and economical effects such as low cost.

An embodiment of the present application will be described below with reference to the drawings. In FIGS. 1, 2, and 3, reference numeral 1 denotes an internal metal fitting, which is formed by bending a single spring plate. 1, 1a is the base, 1b,
1c is each takeout section. Reference numeral 2 denotes a lower elastic piece, which is a plate-shaped lower elastic piece 2 formed inside the elongated U-shaped slit extending from around the guide step 8 formed at the front of the carry-out portion 1c to the protrusion 4. The upper elastic piece 5 has its tip projected obliquely toward the bottom of the inner wall 21.
and the protrusion 4 with its tip positioned between the guide hole 9 and the protrusion 4.
It is positioned so that it can be pressed against the wire end 14 along the trajectory of the wire end 14 inserted through the
is pressed into contact with the guide groove 13 of the conductive waveguide plate 12, and its tip bites into the electric wire to lock it and prevent it from coming off. Due to its flexibility and large elasticity, it is light and easy to insert, and it does not require force. In order to achieve zero pressure welding, the pressure welding force does not decrease even if thick wires and thin wires are repeatedly reused alternately.Furthermore, in terms of the amount of material used, the middle of the spring strip of the protruding portion 1c is hollowed out. There is no increase in the amount of material because it is constructed of the same material, and in terms of processing, there is no increase in the number of steps because the upper slit 10 and the lower slit 11 can be formed at the same time as the slit processing. Reference numeral 4 denotes a protrusion, which is provided below each of the protruding parts 1c and strongly presses the tip of the wire terminal 14. Reference numeral 5 designates an upper elastic piece, which has its tip positioned diagonally downward toward the inner wall 21 of the internal fitting 1 by folding the tip of each of the protruding parts 1c, and has the same effect as the lower elastic piece 2 described above. have Reference numeral 6 denotes a support wall, which supports the tip of the guide hole 9 from the outside so as to wrap around the folded portion 7, and supports and fixes the take-out portion 1c. Reference numeral 7 denotes a folded portion, and the tip portion of the protruding portion 1c is bent toward the inside of the internal fitting 1 to constitute the upper elastic piece 5. Reference numeral 8 denotes a guide step, which has a smooth circular shape so that when the inner fitting 1 is inserted into the inner hole 17 of the insulating cap 15 through its opening, the tip of the support wall 6 will not slide against the inner wall surface and interfere with insertion. The protrusion 8 leads and pushes it open to facilitate its insertion. Reference numeral 9 denotes a guide hole, in which the upper elastic piece 5, the lower elastic piece 2, the protrusion 4 provided at the lowest part, and the guide groove 13 are arranged in parallel in a straight line in the carry-out part 1a. It acts as a guide and supports, and the electric wire terminal 14 is inserted along its trajectory and fixed so as to be completely connected and prevented from moving back and forth, left and right, and up and down. Reference numeral 10 denotes an upper slit, which is completely slit from the bent part of the support wall 6, which is located on a straight line between the respective guide holes 9, to the tip, and is slit individually so as not to be mutually influenced by the adjacent support walls 6. The folded part 7 is supported. Reference numeral 11 denotes a lower slit which completely cuts between the respective protruding parts 1c to their tips, and is divided so that the respective protruding parts 1c are not affected by each other. Reference numeral 12 denotes an electric waveguide plate, which forms a guide groove 13 and connects it to the protruding portion 1c.
and inserted into the space of the inner wall 21. Reference numeral 13 denotes a guide groove, which is formed in a circular shape to guide the wire end 14 so that it does not bend left and right and to increase the contact area along the wire end 14, which has a circular cross section.
There is no need to limit the shape to a circle as long as a groove is formed.
Reference numeral 15 denotes an insulating cap, which insulates and covers the inner fitting 1, and the shape, method, material, etc. of the covering may be arbitrary. Reference numeral 16 denotes a guide cap, which uses an arbitrary insulating material to guide the wire terminal 14 and to support and insulate the wire after use. Reference numeral 17 denotes an internal hole, which is formed deep inside the insulating cap 15 and houses the internal fitting 1 therein. Reference numeral 18 indicates an insertion port, which is a hole provided in parallel to the guide cap 16. Reference numeral 19 denotes a stop, which locks the inner fitting 1 and the guide cap 16. Reference numeral 20 denotes a locking portion, which is formed with a protrusion at the tip of the guide cap and is fitted into the stop 19 to lock the guide cap. Reference numeral 22 denotes a voltage detection hole, which is provided at the lower part of the conductive waveguide plate 12, and a voltage detection needle is inserted into this hole to examine the voltage.

As mentioned above, one electric waveguide plate 12 is attached to the inner fitting 1 that connects a large number of electric wire terminals 14 with one spring plate.
It has a simple structure in which a terminal body incorporating a terminal body is inserted into an insulating cap 15, and it is small and lightweight, can be automatically and continuously processed, and is extremely economical because it is easy to use and can be provided at a low cost. The wire end 14 is pressure-bonded at three points, and two places are used to prevent it from coming off, so the conductive connection is perfect and has excellent durability. It has excellent electrical and mechanical functions, such as double pressure contact with two elastic pieces and reliable electrical conduction even in cases where the contact cannot be reached.

In addition, as shown in FIG. 5 in the figure, the upper elastic piece 5
If the insulating cap 15 is made of a material with enough durability to withstand the combined pressure force of the lower elastic piece 2 and the protrusion 4, the base 1a and the protruding part 1b may be removed, and the protruding part 1b may be removed. 1c and electric waveguide plate 12
If it is incorporated into the internal hole 17, it also has the applicability to realize an excellent applied product having the same functions and characteristics as the present invention.

[Brief explanation of drawings]

The drawings show one embodiment of the present application, and FIG. 1 is a partial cross-sectional view of the product, FIGS. 2 and 3 are perspective views of the inner fitting, FIG. 4 is a perspective view of the electric waveguide plate, and FIG. The figure is a partial cross-sectional view of the applied product. 1... Inner metal fitting, 2... Lower elastic piece, 3... U
Letter-shaped slit, 4... Protrusion, 5... Upper elastic piece, 6... Support wall, 7... Turned part, 8... Guide step, 9... Guide hole, 10... Upper slit, 11
...Lower slit, 12...Electric waveguide plate, 13...
Guide groove, 14... Electric wire terminal, 15... Insulating cap, 16... Guide cap, 17... Inner hole, 1
8...Inlet, 19...Stop, 20...Locking part,
21...inner wall, 22...voltage hole.

Claims (1)

[Claims] 1 A guide hole into which each electric wire end is inserted is provided in one of the projecting parts, and an upper and lower elastic piece and a protrusion are provided in series in the other projecting part, and both of the projecting parts are connected to the base. In the inner fitting, the tip of one protruding part provided with a guide hole after being bent toward one side is bent along the outside of the folded part at the front of the other protruding part,
The upper and lower elastic pieces and protrusions are provided so as to be positioned in a straight line along the insertion locus of the wire end inserted through the guide hole, and a slit is completely formed between the respective protruding parts provided with the above-mentioned press-contact parts. A plug-in connector characterized in that it operates independently.